A press for pressing a material to form a structural component comprises at least one revolving press band and a control for controlling the course of the press band. The least cost transaction scheme may be determined at a point of sale device or at a host computer system that communicates with a point of sale device. First and second pins extend from the pedal assembly through the first and second slots whereby the pedal assembly is supported for sliding movement on the support structure along the slots. An alternative composition is a therapeutically effective amount of a lactic acid producing bacterium such as Lactobacillus bacterium in combination with a lactate utilizing bacterium such as Propionibacterium. The content is loaded into system memory of the processing system.